Entries on مخمخ in 2 Arabic dictionaries by the authors Habib Anthony Salmone, An Advanced Learner's Arabic-English Dictionary and Supplément aux dictionnaires arabes by Reinhart Dozy
Volunteers needed (having reasonably advanced knowledge of Arabic, and relatively good English): There are 20-40 dictionaries that can be added to The Arabic Lexicon once the digital versions are reviewed and any necessary corrections carried out (sometimes this can be done in a few hours). If you're interested, please email me at this address: contact@hawramani.com.